> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sprd.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication & Buyer Protection

> How each platform protects buyers, and when to verify yourself.

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  return <iframe src={`${baseUrl}/embed/${path}`} width="100%" height={height} style={{
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};

Every platform handles authenticity and buyer protection differently. Knowing the difference is critical for evaluating spreads — a cheaper ask on a platform with no protection carries more risk.

## Platform-by-platform

### StockX & GOAT (Exchange)

Every item is authenticated before delivery. The seller ships to the platform, experts verify condition and authenticity, then it ships to you. If it fails, the transaction is cancelled and you're refunded.

In SPRD, these quotes show a **green shield** icon. This is the safest way to buy.

### eBay

Two layers of protection:

* **Authenticity Guarantee (AG)** — For sneakers over \$100, eBay routes items through a third-party authenticator before delivery. Same concept as StockX/GOAT. In SPRD, AG listings show a **green shield**. AG shipping is included in the buyer cost breakdown.
* **Money Back Guarantee** — All eBay purchases are covered. If the item doesn't match the listing (wrong item, fake, damaged), you can return it for a full refund. This applies even to non-AG listings.

<Note>
  eBay AG only applies to sneakers over \$100 in eligible categories. Below that threshold, you still have Money Back Guarantee but no physical authentication.
</Note>

### Mercari

Mercari holds payment until you confirm the item. You have 3 days after delivery to inspect and either accept or open a return. No physical authentication, but the hold period gives you time to verify.

### Depop

Buyer protection via Depop Payments. If the item is significantly not as described, you can open a dispute. No authentication service.

### Grailed

Buyer protection through PayPal. File a dispute if the item is fake or not as described. No platform authentication, but Grailed's community is authentication-aware — sellers often include LegitApp certificates.

### Reddit & Facebook

No platform protection. Transactions are direct (PayPal, Venmo, Zelle). PayPal Goods & Services offers some dispute protection, but Friends & Family does not.

<Warning>
  Never pay via Friends & Family or Zelle for items from sellers you don't know. There's no way to recover your money.
</Warning>

## Self-authentication

For P2P purchases or high-value items without platform authentication, use a third-party service.

### LegitApp

The most common option for sneakers and streetwear.

<Steps>
  <Step title="Collect photos">
    Clear photos of the box label, size tag, insole, outsole, and stitching details. If using a [forwarding service](/buying-and-receiving#using-a-forwarding-service), request their photo inspection.
  </Step>

  <Step title="Submit to LegitApp">
    Upload photos through the app or website. Select the product category.
  </Step>

  <Step title="Get results">
    AI does an initial scan, then human experts review. Pass, fail, or inconclusive.
  </Step>
</Steps>

Cost: \$3-5 per item. Turnaround: 1-12 hours.

### Other services

| Service        | Best for               | Cost                    |
| -------------- | ---------------------- | ----------------------- |
| **LegitApp**   | Sneakers, streetwear   | \$3-5                   |
| **CheckCheck** | Sneakers               | \$3-5                   |
| **Entrupy**    | Luxury goods, handbags | \$10+ (requires device) |

## When to authenticate yourself

* **Always** for P2P purchases (Reddit, Facebook) over \$100
* **Recommended** for eBay non-AG listings from low-feedback sellers
* **Not needed** for StockX, GOAT, or eBay AG — the platform handles it

## When selling

* **On StockX/GOAT** — The platform re-authenticates, but verifying before listing protects you from unknowingly selling a fake
* **On P2P platforms** — Share your LegitApp certificate in the listing. Authenticated items sell faster and at higher prices

## Trust badges in SPRD

<Embed path="orderbook-expanded" height={420} />

* **Green shield** — Platform-authenticated (StockX, GOAT, eBay AG)
* **Amber check** — Top seller with strong track record
* **No badge** — New or unverified seller

Use **Verified Only** on [Discover](/discover) to show only authenticated and high-trust listings.